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Finding the Fourth Proportional to 478,666.43, 718,006.95 and 141,741.16

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Solution

The fourth proportional to 478,666.43, 718,006.95 and 141,741.16 is: 212,613.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,666.43 : 718,006.95 = 141,741.16 : x
  2. Step 2: Convert to fraction form
    478,666.43/718,006.95 = 141,741.16/x
  3. Step 3: Cross multiply
    478,666.43x = 718,006.95 × 141,741.16
  4. Step 4: Simplify right side
    478,666.43x = 101,771,136,186.05
  5. Step 5: Solve for x
    x = 101,771,136,186.05/478,666.43
  6. Step 6: Final answer
    x = 212,613.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.